natural selection
which scientist is credited for the discovery of natural selection
Charles darwin
what are good desgins able to do when it comes to constraints
overcomes constraints
define permeability
ability of a liquid to flow through a substance
define germ cells and identify where they're located
create reproductive cells located in the ovaries for women and testicles for men
explain four ways humans impact the environment both negatively and positively.
by protecting endangered species
by choosing renewable energy
by destroying habitats
by creating regulations to limit the number of greenhouse gases released into the atmosphere
define variations of genetics
different genes
is it possible for engineering design process to come up with a solution to the problem after the first attempt?
YES.
define porosity
a rock where water stays in the rock
define chromosomes
found in the nucleus carrying genetics
what could help minimize negative human impacts on the environment?
reducing reliance on fossil fuels
define selective breeding
choosing what to breed based off characteristics
how many solutions to a problem are possible when using the engineering design process?
many possible correct solutions.
are fossil fuels considered renewable or nonrenewable resources? why?
non-renewable because it would take a long time to form
explain the process of crossing over during meiosis
when chromosomes are lined up at the same time
explain a solution for overhunting a species low in population.
giving out a limited number of hunting permits based on the species' population
define mutation
change in genetic sequence
what are the four main types of bridges
suspension
cable-stayed
tied arch
beam
which fossil fuels come from living organisms that died millions of years ago?
coal and oil
how many chromosomes does meiosis start with compared to mitosis?
half
identify two organizations that work on restoring animal habitats
marine biologist consideration society
u.s. fishes
define natural selection
the idea that creates will pass along traits to help them survive because those that don't have the traits will die sooner
list the engineering design process in the correct order.
ask about a need, carry out research and brainstorm solutions, build and test a prototype, report the results
what are the three types of fossil fuels
coal, oil, and natural gas
define a cell
smallest unit and makes up all living organisms
can negatively impact groundwater and the atmosphere